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CND => RDFS translation
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@cbeer
cbeer committed Jul 19, 2013
1 parent 0ad4c4b commit 8b79608
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126 changes: 126 additions & 0 deletions fcrepo-kernel/src/main/java/org/fcrepo/utils/JcrRdfTools.java
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Expand Up @@ -59,13 +59,16 @@
import javax.jcr.Session;
import javax.jcr.Value;
import javax.jcr.ValueFactory;
import javax.jcr.nodetype.NodeDefinition;
import javax.jcr.nodetype.NodeType;
import javax.jcr.nodetype.NodeTypeIterator;
import javax.jcr.nodetype.NodeTypeManager;
import javax.jcr.nodetype.PropertyDefinition;
import javax.jcr.version.Version;
import javax.jcr.version.VersionHistory;
import javax.jcr.version.VersionIterator;

import com.hp.hpl.jena.datatypes.xsd.XSDDatatype;
import org.fcrepo.RdfLexicon;
import org.fcrepo.rdf.GraphSubjects;
import org.fcrepo.services.LowLevelStorageService;
Expand Down Expand Up @@ -805,6 +808,129 @@ public static Model getFixityResultsModel(final GraphSubjects factory,
return model;
}

public static Model getJcrPropertiesModel(final GraphSubjects factory, final Session session, final NodeTypeManager nodeTypeManager) throws RepositoryException {
final Model model = createDefaultJcrModel(session);

final NodeTypeIterator primaryNodeTypes = nodeTypeManager.getPrimaryNodeTypes();

while (primaryNodeTypes.hasNext()) {
NodeType t = primaryNodeTypes.nextNodeType();
addJcrPropertiesToModel(factory, model, session, t);
}

final NodeTypeIterator mixinNodeTypes = nodeTypeManager.getMixinNodeTypes();

while (mixinNodeTypes.hasNext()) {
NodeType t = mixinNodeTypes.nextNodeType();
addJcrPropertiesToModel(factory, model, session, t);
}

return model;

}

public static Model getJcrPropertiesModel(final GraphSubjects factory, final Session session, final NodeType nodeType) throws RepositoryException {
final Model model = createDefaultJcrModel(session);

addJcrPropertiesToModel(factory, model, session, nodeType);

return model;
}

public static void addJcrPropertiesToModel(final GraphSubjects factory, final Model model, final Session session, final NodeType nodeType) throws RepositoryException {

final Resource nodeTypeResource = model.createResource("#" + nodeType.getName());
final com.hp.hpl.jena.rdf.model.Property rdfType = model.createProperty("http://www.w3.org/1999/02/22-rdf-syntax-ns#type");
final com.hp.hpl.jena.rdf.model.Property rdfsRange = model.createProperty("http://www.w3.org/2000/01/rdf-schema#range");
final com.hp.hpl.jena.rdf.model.Property rdfsDomain = model.createProperty("http://www.w3.org/2000/01/rdf-schema#domain");
final com.hp.hpl.jena.rdf.model.Property isDefinedBy = model.createProperty("http://www.w3.org/2000/01/rdf-schema#isDefinedBy");
final com.hp.hpl.jena.rdf.model.Property rdfsLabel = model.createProperty("http://www.w3.org/2000/01/rdf-schema#label");
final com.hp.hpl.jena.rdf.model.Property rdfsSubClassOf = model.createProperty("http://www.w3.org/2000/01/rdf-schema#subClassOf");

model.add(nodeTypeResource, rdfType, model.createResource("http://www.w3.org/2000/01/rdf-schema#Class"));
model.add(nodeTypeResource, isDefinedBy, factory.getGraphSubject(session, "/"));
model.add(nodeTypeResource, rdfsLabel, nodeType.getName());

for (NodeType type : nodeType.getDeclaredSupertypes()) {
model.add(nodeTypeResource, rdfsSubClassOf, model.createResource("#" + type.getName()));
}

for (NodeDefinition nodeDefinition : nodeType.getDeclaredChildNodeDefinitions()) {
final Resource propertyDefinitionResource = model.createResource("#" + nodeType.getName() + "-" + nodeDefinition.getName());
model.add(propertyDefinitionResource, rdfType, model.createResource("http://www.w3.org/2000/01/rdf-schema#Property"));
model.add(propertyDefinitionResource, rdfsDomain, nodeTypeResource);
model.add(propertyDefinitionResource, isDefinedBy, factory.getGraphSubject(session, "/"));
model.add(propertyDefinitionResource, rdfsLabel, nodeDefinition.getName());

final NodeType[] requiredPrimaryTypes = nodeDefinition.getRequiredPrimaryTypes();

switch (requiredPrimaryTypes.length) {
case 0:
// no-op
break;
case 1:
model.add(propertyDefinitionResource, rdfsRange, model.createResource("#" + requiredPrimaryTypes[0].getName()));
break;
default:
final Resource resource = model.createResource();

model.add(propertyDefinitionResource, rdfsRange, resource);

model.add(resource, rdfType, model.createResource("http://www.w3.org/2002/07/owl#Class"));
final com.hp.hpl.jena.rdf.model.Property unionOf = model.createProperty("http://www.w3.org/2002/07/owl#unionOf");

for (NodeType requiredPrimaryType : requiredPrimaryTypes) {
model.add(resource, unionOf, model.createResource("#" + requiredPrimaryType.getName()));
}


break;
}

}


for (PropertyDefinition propertyDefinition : nodeType.getDeclaredPropertyDefinitions()) {

final Resource propertyDefinitionResource = model.createResource("#" + nodeType.getName() + "-" + propertyDefinition.getName());
model.add(propertyDefinitionResource, rdfType, model.createResource("http://www.w3.org/2000/01/rdf-schema#Property"));
model.add(propertyDefinitionResource, rdfsDomain, nodeTypeResource);
model.add(propertyDefinitionResource, isDefinedBy, factory.getGraphSubject(session, "/"));
model.add(propertyDefinitionResource, rdfsLabel, propertyDefinition.getName());

final int requiredType = propertyDefinition.getRequiredType();

switch (requiredType) {
case BOOLEAN:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDboolean.getURI()));
break;
case DATE:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDdate.getURI()));
break;
case DECIMAL:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDdecimal.getURI()));
break;
case DOUBLE:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDdecimal.getURI()));
break;
case LONG:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDlong.getURI()));
break;
case URI:
case REFERENCE:
case WEAKREFERENCE:
case PATH:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDanyURI.getURI()));
break;

default:
model.add(propertyDefinitionResource, rdfsRange, model.createResource(XSDDatatype.XSDstring.getURI()));
}

}

}

/**
* Set the function used to get the cluster configuration for Infinispan
*/
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47 changes: 47 additions & 0 deletions fcrepo-kernel/src/test/java/org/fcrepo/integration/utils/JcrRdfToolsIT.java
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@@ -0,0 +1,47 @@
package org.fcrepo.integration.utils;


import com.hp.hpl.jena.rdf.model.Model;
import org.apache.commons.io.IOUtils;
import org.fcrepo.integration.AbstractIT;
import org.fcrepo.rdf.impl.DefaultGraphSubjects;
import org.fcrepo.utils.JcrRdfTools;
import org.junit.Test;
import org.springframework.test.context.ContextConfiguration;

import javax.inject.Inject;
import javax.jcr.LoginException;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.nodetype.NodeType;
import java.io.ByteArrayOutputStream;

import static org.junit.Assert.assertTrue;

@ContextConfiguration({"/spring-test/repo.xml"})
public class JcrRdfToolsIT extends AbstractIT {

@Inject
Repository repo;

final DefaultGraphSubjects defaultGraphSubjects = new DefaultGraphSubjects();

@Test
public void shouldMapJcrNodeTypesToRDFS() throws RepositoryException {

final Session session = repo.login();


final Model jcrPropertiesModel = JcrRdfTools.getJcrPropertiesModel(defaultGraphSubjects, session, session.getWorkspace().getNodeTypeManager());

final ByteArrayOutputStream o = new ByteArrayOutputStream();
jcrPropertiesModel.write(o, "N3");

final String s = o.toString();

assertTrue("", s.contains("#fedora:object"));
session.logout();
}

}

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